public class Signallazy {
    public volatile static Signallazy signallazy=null;
    public  static Signallazy getInstance()
    {
        if(signallazy==null)
        {
            synchronized (Signallazy.class)
            {
                if(signallazy==null)
                {
                    signallazy=new Signallazy();
                }
            }
        }
        return signallazy;
    }
    private Signallazy()
    {

    }
}
